Tampa Bay Buccaneers OG Ali Marpet is officially transitioning to left guard this season. It will be Marpet's third position in three years. The right guard position remains a question mark, but OG J.R. Sweezy (leg) is a candidate for that spot if he is healthy. OT Caleb Benenoch is another option, according to head coach Dirk Koetter. Benenoch started the last five games of the 2017 season at right tackle.